/* * * (C) Copyright 2003 * Author : Hamid Ikdoumi (Atmel) * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA *//* * Adapted for KwikByte KB920x board: 22APR2005 */#include <common.h>#include <at91rm9200_net.h>#include <net.h>#include <lxt971a.h>#ifdef CONFIG_DRIVER_ETHER#if defined(CONFIG_CMD_NET)/* * Name: *	lxt972_IsPhyConnected * Description: *	Reads the 2 PHY ID registers * Arguments: *	p_mac - pointer to AT91S_EMAC struct * Return value: *	TRUE - if id read successfully *	FALSE- if error */unsigned int lxt972_IsPhyConnected (AT91PS_EMAC p_mac){	unsigned short Id1, Id2;	at91rm9200_EmacEnableMDIO (p_mac);	at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_ID1, &Id1);	at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_ID2, &Id2);	at91rm9200_EmacDisableMDIO (p_mac);	if ((Id1 == (0x0013)) && ((Id2  & 0xFFF0) == 0x78E0))		return TRUE;	return FALSE;}/* * Name: *	lxt972_GetLinkSpeed * Description: *	Link parallel detection status of MAC is checked and set in the *	MAC configuration registers * Arguments: *	p_mac - pointer to MAC * Return value: *	TRUE - if link status set succesfully *	FALSE - if link status not set */UCHAR lxt972_GetLinkSpeed (AT91PS_EMAC p_mac){	unsigned short stat1;	if (!at91rm9200_EmacReadPhy (p_mac, PHY_LXT971_STAT2, &stat1))		return FALSE;	if (!(stat1 & PHY_LXT971_STAT2_LINK))	/* link status up? */		return FALSE;	if (stat1 & PHY_LXT971_STAT2_100BTX) {		if (stat1 & PHY_LXT971_STAT2_DUPLEX_MODE) {			/*set Emac for 100BaseTX and Full Duplex  */			p_mac->EMAC_CFG |= AT91C_EMAC_SPD | AT91C_EMAC_FD;		} else {			/*set Emac for 100BaseTX and Half Duplex  */			p_mac->EMAC_CFG = (p_mac->EMAC_CFG &					~(AT91C_EMAC_SPD | AT91C_EMAC_FD))					| AT91C_EMAC_SPD;		}		return TRUE;	} else {		if (stat1 & PHY_LXT971_STAT2_DUPLEX_MODE) {			/*set MII for 10BaseT and Full Duplex  */			p_mac->EMAC_CFG = (p_mac->EMAC_CFG &					~(AT91C_EMAC_SPD | AT91C_EMAC_FD))					| AT91C_EMAC_FD;		} else {			/*set MII for 10BaseT and Half Duplex  */			p_mac->EMAC_CFG &= ~(AT91C_EMAC_SPD | AT91C_EMAC_FD);		}		return TRUE;	}	return FALSE;}/* * Name: *	lxt972_InitPhy * Description: *	MAC starts checking its link by using parallel detection and *	Autonegotiation and the same is set in the MAC configuration registers * Arguments: *	p_mac - pointer to struct AT91S_EMAC * Return value: *	TRUE - if link status set succesfully *	FALSE - if link status not set */UCHAR lxt972_InitPhy (AT91PS_EMAC p_mac){	UCHAR ret = TRUE;	at91rm9200_EmacEnableMDIO (p_mac);	if (!lxt972_GetLinkSpeed (p_mac)) {		/* Try another time */		ret = lxt972_GetLinkSpeed (p_mac);	}	/* Disable PHY Interrupts */	at91rm9200_EmacWritePhy (p_mac, PHY_LXT971_INT_ENABLE, 0);	at91rm9200_EmacDisableMDIO (p_mac);	return (ret);}/* * Name: *	lxt972_AutoNegotiate * Description: *	MAC Autonegotiates with the partner status of same is set in the *	MAC configuration registers * Arguments: *	dev - pointer to struct net_device * Return value: *	TRUE - if link status set successfully *	FALSE - if link status not set */UCHAR lxt972_AutoNegotiate (AT91PS_EMAC p_mac, int *status){	unsigned short value;	/* Set lxt972 control register */	if (!at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_CTRL, &value))		return FALSE;	/* Restart Auto_negotiation  */	value |= PHY_COMMON_CTRL_RES_AUTO;	if (!at91rm9200_EmacWritePhy (p_mac, PHY_COMMON_CTRL, &value))		return FALSE;	/*check AutoNegotiate complete */	udelay (10000);	at91rm9200_EmacReadPhy (p_mac, PHY_COMMON_STAT, &value);	if (!(value & PHY_COMMON_STAT_AN_COMP))		return FALSE;	return (lxt972_GetLinkSpeed (p_mac));}#endif#endif	/* CONFIG_DRIVER_ETHER */